From: Esben Haabendal <esben.haabendal@gmail.com>
To: linux-i2c@vger.kernel.org
Cc: Esben Haabendal <eha@deif.com>, Shawn Guo <shawnguo@kernel.org>,
kernel@pengutronix.de, NXP Linux Team <linux-imx@nxp.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v4 3/3] arm: dts: ls1021a: Enable I2C DMA support
Date: Thu, 16 Aug 2018 10:43:14 +0200 [thread overview]
Message-ID: <20180816084315.7857-4-esben.haabendal@gmail.com> (raw)
In-Reply-To: <20180816084315.7857-1-esben.haabendal@gmail.com>
From: Esben Haabendal <eha@deif.com>
Gives substantial performance improvement for transfers larger than 16
bytes (DMA_THRESHOLD). Smaller transfers are unaffected.
Signed-off-by: Esben Haabendal <eha@deif.com>
---
arch/arm/boot/dts/ls1021a.dtsi | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm/boot/dts/ls1021a.dtsi b/arch/arm/boot/dts/ls1021a.dtsi
index c55d479971cc..1e5640701c65 100644
--- a/arch/arm/boot/dts/ls1021a.dtsi
+++ b/arch/arm/boot/dts/ls1021a.dtsi
@@ -363,6 +363,8 @@
interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>;
clock-names = "i2c";
clocks = <&clockgen 4 1>;
+ dma-names = "tx", "rx";
+ dmas = <&edma0 1 39>, <&edma0 1 38>;
status = "disabled";
};
@@ -374,6 +376,8 @@
interrupts = <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
clock-names = "i2c";
clocks = <&clockgen 4 1>;
+ dma-names = "tx", "rx";
+ dmas = <&edma0 1 37>, <&edma0 1 36>;
status = "disabled";
};
@@ -385,6 +389,8 @@
interrupts = <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>;
clock-names = "i2c";
clocks = <&clockgen 4 1>;
+ dma-names = "tx", "rx";
+ dmas = <&edma0 1 35>, <&edma0 1 34>;
status = "disabled";
};
--
2.18.0
next prev parent reply other threads:[~2018-08-16 8:43 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20180816084315.7857-1-esben.haabendal@gmail.com>
2018-08-16 8:43 ` [PATCH v4 1/3] i2c: imx: Fix race condition in dma read Esben Haabendal
2018-08-20 9:13 ` Wolfram Sang
2018-08-16 8:43 ` [PATCH v4 2/3] i2c: imx: Simplify stopped state tracking Esben Haabendal
2018-08-20 9:14 ` Wolfram Sang
2018-08-20 9:20 ` Esben Haabendal
2018-08-16 8:43 ` Esben Haabendal [this message]
2018-08-16 15:50 ` [PATCH v4 3/3] arm: dts: ls1021a: Enable I2C DMA support Uwe Kleine-König
2018-08-20 9:15 ` Wolfram Sang
2018-08-20 9:23 ` Esben Haabendal
2018-08-20 11:14 ` Wolfram Sang
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